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Juli2301 [7.4K]
3 years ago
15

Evaluate 18 - 5x when x = -7​

Mathematics
1 answer:
sukhopar [10]3 years ago
3 0

Answer:

i thinks its -53

Step-by-step explanation:

18-5x

5x-7= -35

-35-18

-53

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How do you do <br> Y=8x+10
White raven [17]

Question is vague.

to solve for x:

subtract 10 on both sides

y - 10 = 8x

isolate the x, so divide the coefficient

(y - 10)/8 = x

to solve for y:

y = 8x + 10

5 0
3 years ago
Vector u has a magnitude of 4 with a direction of 50°. Vector v has a magnitude of 6 with
Luda [366]

Answer: <8.01, 5.60>.

Step-by-step explanation:

Vector:

v= (r\cos\theta,r\sin\theta)

, where r = magnitude and \theta = angle .

As per given,

u=(4\cos 50^{\circ}, 4\sin 50^{\circ})\\\\\approx(4(0.64),4(0.77))\\\\=(2.56, 3.08)

v=(6\cos 25^{\circ}, 6\sin 25^{\circ})\\\\\approx(6(0.91),6(0.42))\\\\=(5.46, 2.52)

Consider

u+v=(2.56,3.08)+(5.46,2.52)\\\\=(2.56+5.46,3.08+2.52)\\\\=(8.02,\ 5.60)

Hence, the correct option is <8.01, 5.60>.

7 0
3 years ago
What point the equation
Zinaida [17]

Answer:

<h2>D. (-2, 4)</h2>

Step-by-step explanation:

Put the coordinates of the points and check the equality.

2x + 3y = 8

A. (1, 4) → x = 1, y = 4

2(1) + 3(4) = 2 + 12 = 14 ≠ 8

B. (2, 2) → x = 2, y = 2

2(2) + 3(2) = 4 + 6 = 10 ≠ 8

C. (-1, 3) → x = -1, y = 3

2(-1) + 3(3) = -2 + 9 = 7 ≠ 8

D. (-2, 4) → x = -2, y = 4

2(-2) + 3(4) = -4 + 12 = 8   CORRECT

6 0
4 years ago
A family purchased tickets to a museum and spent a total of $38.00. The family purchased 4 tickets. There was $1.50 processing f
Mademuasel [1]

From my work, i got 4x+$1.50=48 I hope it helps you.

if i got it wrong please forgive me! also if it is Okie with you, Can i please have brainliest? Thank you!

7 0
3 years ago
Read 2 more answers
(-4y3 – 5y +16) + (4y2 – y + 9) =
velikii [3]

Answer:

-4y^3 + 4y^2 - 6y + 25

Step-by-step explanation:

<u>Step 1:  Distribute the plus</u>

(-4y^3 – 5y +16) + (4y^2 – y + 9)

-4y^3 - 5y + 16 + 4y^2 - y + 9

<u>Step 2:  Combine like terms</u>

-4y^3 - 5y + 16 + 4y^2 - y + 9

-4y^3 + 4y^2 - 6y + 25

6 0
3 years ago
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